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Nelson Exam Review

Semester Exam

Cemical properties include changes that alter the identity of a substance
The study of substances containing carbon is organic chemisrty
The particles in a solid are packed closely together
Group __ in the periodic table contains only metals. 2
Physical means can be used to separate mixtures
An example of an extensive physical property is mass
Which element has properties most similar to those of sodium? calcium
What is an intensive physical property? color
WHat is not a property of metals? unreactivity
A vertical column of blocks in the periodic table is called a group
The symbol for the metric unit used to measure mass is grams
The symbol that represents the measured unit for volume is mL
The SI standard units fir length and mass are meter and kilogram
The SI base unit for time is the second
A change in the force of Earth's gravity on an object will affect its weight
The product of 13cm* 5.7 cm is correctly reported as 74 cm(2)
The graph of an inverse proportion is a hyperbola
The graph of a direct proportion is a straight line
The number of sig. digits in the measurment 210cm is 2
How many minutes are in one week? 10,080
NIckel-60 has 32 neutrons
Sulphur-34 contains 18 neutrons
Who called the atom an atom Democritus
Chlorine-35. It has 17 protons, 17 electrons, and 18 neutrons
what does the 218 in polonium-218 represent? mass number
Experiments with cathode rays led to the discovery of the electron
How many sig digs are in 50.00000s 7
What is the atomic number of Tungsten 74
How many sig digs are in .0050m 4
What scientist discovered electrons? J.J Thompson
In SI, the frequency of electromagnetic radiation is measured in hertz
As it travels through space, electromagnetic radiation exhibits wavelike behavior
The distance between 2 successive peaks on a wave is its wavelength
A quantum of electromagnetic energy is called a photon
The wave model of light did not explain the photoelectric effect
The number of orbitals for d sublevel is 5
For the f sublevel, the number of orbitals is 7
The main energy level that can only hold 2 electrons is the first
Which group is noble gases 18
What is th speed of light? 3.00 * 10(8)m/s
The number of valence electrons in Group 17 is 7
The number of valence electrons in group 2 is 2
The elements in group 1 are known as alkali metals
A positive ion is known as cation
A negative ion is known as anion
Argon, krypton, and xenon are noble gases
A horizontal row of blocks in the periodic table is called a period
Which group do fluorine and chlorine belong halogens
The elements that border the zigzag line in the perodic table are metalloids
Valence electrons are in the highest energy level
Most chemical bonds are partly ionic and partly covalent
AN octet is equal to 8
A covalent bond results when __ are shared electrons
Atoms are __ when combined more stable
If 2 covalently bonded atoms are identical, the bond is nonpolar covalent
When atoms share electrons, the electrical attraction of an atom for the electrons is called the atom's electronegativity
THe elctrons involved in the formation of a chemical bond are called valence electron
If the atoms that share electrons have an unequal attraction for the electrons, the bond is called polar
B is not an example of what molecular formula
The elements of the __ group satisfy the octet rule without forming compounds noble gases
Created by: chasen2011